Leptospira interrogans serovar hardjo infection in Malaysian indigenous cattle

S. Khairani Bejo, . and A. R. Bahaman, . Leptospira interrogans serovar hardjo infection in Malaysian indigenous cattle. pp. 19-22. ISSN 0128-2506

Six healthy Kedah-Kelantan calves of approximately 8 months old were selected for this study. Four calves were exposed to serovar hardjo by either the conjunctival or intravenous route whilst another two calves were housed together with the four infected calves to study the transmission of hardjo infection. Clinical signs of hardjo infection were not observed. Leptospiremia was first detected on post-inoculation day (PID) 7 and lasted until PID 13 in the infected cattle. However it was found that dark-field microscopy was not sensitive enough to detect leptospires in the urine and blood samples. Leptospiruria was only present in animals that have been challenged through the conjunctival route. It was first detected on PID 50 and persisted to PID 148. Leptospires were not isolated from the kidneys of the infected cattle. Leptospira interrogans serovar hardjo appeared to stimulate low antibody response in one of the animals infected conjunctively (titre of 1:320). There was no evidence of natural transmission of hardjo infection to the in-contact animals even tough that were housed together with the infected animals.

Full text available from: Official URL: https://www.mavma.org.my/2000-volume-12-issue-no-1...

Abstract

Six healthy Kedah-Kelantan calves of approximately 8 months old were selected for this study. Four calves were exposed to serovar hardjo by either the conjunctival or intravenous route whilst another two calves were housed together with the four infected calves to study the transmission of hardjo infection. Clinical signs of hardjo infection were not observed. Leptospiremia was first detected on post-inoculation day (PID) 7 and lasted until PID 13 in the infected cattle. However it was found that dark-field microscopy was not sensitive enough to detect leptospires in the urine and blood samples. Leptospiruria was only present in animals that have been challenged through the conjunctival route. It was first detected on PID 50 and persisted to PID 148. Leptospires were not isolated from the kidneys of the infected cattle. Leptospira interrogans serovar hardjo appeared to stimulate low antibody response in one of the animals infected conjunctively (titre of 1:320). There was no evidence of natural transmission of hardjo infection to the in-contact animals even tough that were housed together with the infected animals.

[error in script]

Item Type:	Article
AGROVOC Term:	Cattle
AGROVOC Term:	Leptospira
AGROVOC Term:	Infection
AGROVOC Term:	Bacterial diseases
AGROVOC Term:	Serological diagnosis
AGROVOC Term:	Inoculation
AGROVOC Term:	Blood
AGROVOC Term:	Urine
AGROVOC Term:	Agglutination tests
AGROVOC Term:	Enzyme linked immunosorbent assay
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8663

Actions (login required)

View Item